Liquid crystal display device

Abstract

A liquid crystal display (LCD) device is disclosed, which obtains a high aperture ratio and a wide viewing angle. The LCD device includes first and second substrates; a plurality ofgate and data lines on the first substrate to define a plurality of pixel regions; a pixel electrode in each pixel region; a common electrode on the second substrate, the common electrode having an electric field inducing window dividing each pixel region into at least two domains; an auxiliary electrode on the first substrate, the auxiliary electrode corresponding to the periphery of the pixel electrode in one of at least two domains; and a liquid crystal layer between the first and second substrates.

1. An LCD device comprising:
 first and second substrates; 
 a plurality of gate and data lines on the first substrate to define a plurality of pixel regions; 
 a pixel electrode in the pixel region, the pixel electrode having an electric field inducing window dividing each pixel into at least two domains; 
 an auxiliary electrode below the electric field inducing window; a common electrode on the second substrate; 
 a dielectric structure on the common electrode, the dielectric structure corresponding to the periphery of the pixel electrode in one of at least two domains; and 
 a liquid crystal layer between the first and second substrates, 
 wherein the auxiliary electrode is formed in a rectangular “C” shape. 
 
     
     
       2. The LCD device of  claim 1 , further comprising:
 a thin film transistor at each crossing point of the gate and data lines; 
 a black matrix layer on the second substrate; 
 a color filter layer on the black matrix layer; and 
 first and second alignment layers on the first and second substrates. 
 
     
     
       3. The LCD device of  claim 2 , wherein the dielectric structure is formed at a portion where an alignment direction of liquid crystal molecules is different from an alignment direction of the first alignment layer when a voltage is applied. 
     
     
       4. The LCD device of  claim 1 , wherein the auxiliary electrode is formed on the same layer as the gate line. 
     
     
       5. The LCD device of  claim 1 , wherein the auxiliary electrode is formed on the same layer as the data line. 
     
     
       6. The LCD device of  claim 1 , wherein the dielectric structure is formed on the first substrate. 
     
     
       7. An LCD device comprising: first and second substrates;
 a plurality of gate and data lines on the first substrate to define a plurality of pixel regions; 
 a pixel electrode in each pixel region; 
 a common electrode on the second substrate, the common electrode having an electric field inducing window dividing each pixel region into at least two domains; 
 an auxiliary electrode on the first substrate, the auxiliary electrode corresponding to the electric field inducing window; 
 a dielectric structure on the first substrate, the dielectric structure corresponding to the periphery of the pixel electrode in one of at least two domains; and 
 a liquid crystal layer between the first and second substrates, 
 wherein the auxiliary electrode is formed in a rectangular “C” shape. 
 
     
     
       8. The LCD device of  claim 7 , further comprising:
 a thin film transistor at each crossing point of the gate and data lines; a black matrix layer on the second substrate; 
 a color filter layer on the black matrix layer; and 
 first and second alignment layers on the first and second substrates. 
 
     
     
       9. The LCD device of  claim 8 , wherein the dielectric structure is formed at a portion where an alignment direction of liquid crystal molecules is different from an alignment direction of the first alignment layer when a voltage is applied. 
     
     
       10. The LCD device of  claim 7 , wherein the auxiliary electrode is formed on the same layer as the gate line. 
     
     
       11. The LCD device of  claim 7 , wherein the auxiliary electrode is formed on the same layer as the data line. 
     
     
       12. The LCD device of  claim 7 , wherein the dielectric structure is formed on the common electrode. 
     
     
       13. A liquid crystal display (LCD) device comprising: first and second substrates;
 a plurality of gate and data lines on the first substrate to define a plurality of pixel regions; 
 a pixel electrode in each pixel region; 
 a common electrode on the second substrate, the at least one of the common and pixel electrodes having an electric field inducing window dividing each pixel region into at least two domains; 
 an electric field inducing structure on one of the first and second substrates, the electric field inducing structure corresponding to the periphery of the pixel electrode in one of at least two domains; and 
 a liquid crystal layer between the first and second substrates, 
 wherein the electric field inducing structure includes an auxiliary electrode; and 
 wherein the auxiliary electrode is formed in a rectangular “C” shape. 
 
     
     
       14. The LCD device of  claim 13 , further comprising:
 a thin film transistor at each crossing point of the gate and data lines; 
 a black matrix layer on the second substrate; 
 a color filter layer on the black matrix layer; and 
 first and second alignment layers on the first and second substrates. 
 
     
     
       15. The LCD device of  claim 14 , wherein the electric field inducing structure is formed at a portion where an alignment direction of liquid crystal molecules is different from an alignment direction of the first alignment layer when a voltage is applied. 
     
     
       16. The LCD device of  claim 13 , wherein the auxiliary electrode is formed on the same layer as the gate line. 
     
     
       17. The LCD device of  claim 13 , wherein the auxiliary electrode is formed on the same layer as the data line. 
     
     
       18. The LCD device of  claim 13 , wherein the electric field inducing structure includes a dielectric structure. 
     
     
       19. The LCD device of  claim 18 , wherein the dielectric structure is formed on the common electrode. 
     
     
       20. The LCD device of  claim 19 , wherein the auxiliary electrode is formed below the electric field inducing window of the pixel electrode. 
     
     
       21. The LCD device of  claim 18 , wherein the dielectric structure is formed on the first substrate. 
     
     
       22. The LCD device of  claim 21 , wherein the auxiliary electrode corresponds to the electric field inducing window of the common electrode.